Pelvic fluid extraction is usually between 100-200 dollars. For pelvic fluid, extraction of fluid is not recommended as a method of giving treatment. Because the main reason for the formation of effusion is due to chronic pelvic inflammatory disease leading to exudation before the formation of effusion, as long as the effusion is treated with broad-spectrum antibiotics combined with metronidazole for the treatment of anaerobic bacteria together with intravenous medication, the effusion will disappear in a week or so. If we take the method of posterior fornix aspiration to extract the fluid, only the amount of fluid will be reduced by ultrasound examination, but the underlying cause is not eliminated, the inflammation will ooze out again, and the fluid will appear again. Moreover, this method of fluid extraction may lead to the invasion of pathogenic bacteria and aggravate pelvic inflammatory disease. Therefore, it is not recommended to extract fluid for treatment, but mainly to find out the cause of fluid accumulation. If it is inflammation, active anti-inflammatory treatment.